Checkout and Payment processing - PHP

I require PHP code that I can easily adapt to my eCommerce site. I wish to sell products, managed by me in an SQLITE database, using PHP5. I wish to call a Shopping Basket,with a product code, price,qty etc. There can be multiple of these in one call. This will create a checkout ID, which can be used for future reference. I wish to then go to Checkout with this ID and hopefully get payment via PAYPAL. I have a PayPal Account and I believe I can receive credit card payments via this PAYPAL account. At sometime in the future I wouldlike to expand to incorporate a download service, which is paid for by PayPal etc. This is very sketchy at the moment. I can manage simple PHP,but I can not work out how to implement the bits of OScommerce, i would need. I do not want to use MySQL as I find the user authorisation side too complicated.I am happy with the less complex SQLITE as included with PHP5. It would be nice if the person,speaks good english, so that we may have telephone conversations, to overcome any queries. Thanks Tim Clarkson ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Windows XP,utilising WAMP for testing. Real world version,will be LINUX. No javascript, only server side PHP code.